Simrad Rf300 Installation Manual

The Simrad RF300 is a high-resolution rotary rudder feedback unit designed to provide precise rudder position data for Simrad autopilot systems, specifically for vessels with inboard engines. Installing this unit correctly is vital for smooth, accurate auto-steering and to avoid common errors like rudder feedback alarms. Key Specifications Interface 2-wire frequency interface Voltage 12-16V via CAN (typical 12V) Cable Length 10 meters (33 feet) Dimensions 99 x 65 x 177 mm Waterproof Rating 1. Physical Installation & Mechanical Linkage

Routing: Ensure the cable is clamped to allow for full rudder movement and include a "drip loop" to prevent water from following the cable into the unit. 3. Calibration and Testing simrad rf300 installation manual

1. Important Safety Information

WARNING

Align the transmitter lever with the alignment marks provided; it should be opposite the cable entry when the rudder is centered. The Simrad RF300 is a high-resolution rotary rudder

The Calibration Procedure:

  1. Hard-Over Port: Physically turn the vessel’s steering wheel (or use a tiller bar) to move the rudder fully to port. Do not use the autopilot to move it—do it manually.
  2. Store Port Value: On the display, select "Set Port" or "Set Minimum." The autopilot records the voltage from the RF300 (typically around 0.5V at hard port).
  3. Hard-Over Starboard: Turn the rudder fully to starboard.
  4. Store Starboard Value: Select "Set Starboard" or "Set Maximum." The system records the voltage (typically around 4.5V at hard starboard).
  5. Center Rudder: Return the rudder to amidships (0 degrees).
  6. Verify: The autopilot display should show "Rudder Angle: 0°" or close to it. The Simrad RF300 installation manual notes that ±2 degrees of error is acceptable; more than that indicates a mechanical misalignment of the linkage rod.

2. Product Overview

The Simrad RF300 is a high-performance, end-fed marine VHF antenna designed for sail and power vessels. It features a low-profile, collinear design for maximum gain and reliability. simrad rf300 installation manual